The spelling of "necrosis ustilaginea" may seem complicated, but it can be broken down through phonetic transcription. "Necrosis" is pronounced "nɛˈkrəʊsɪs," while "ustilaginea" is pronounced "ʌstɪləˈdʒiːnɪə." The "t" and "s" sounds in the first word are followed by the "i" sound in the second, creating a smooth transition between the two. The double "n" in "necrosis" is pronounced with a distinct pause, while the "ea" in "ustilaginea" is combined into one sound. Understanding the pronunciation can help with accurate spelling of this medical term.
Necrosis ustilaginea refers to a specific type of plant disease commonly known as smut. Smut is a fungal infection that affects certain plant species, particularly those belonging to the family Poaceae (grasses) and the genus Zea (corn). It is caused by a group of parasitic fungi known as Ustilaginomycetes.
Necrosis ustilaginea typically begins with the pathogen penetrating the plant tissues, such as stems, leaves, or grains, usually through wounds or natural openings. The fungus then forms a mass of mycelium, which is a network of fine, thread-like structures, within the host plant. This mycelium grows, feeding on the plant's nutrients, and ultimately causes the death of affected tissues or organs, leading to necrosis.
As the infection progresses, visible symptoms become apparent. These can include dark black or brown masses of spores, known as smut balls or sori, which are often found on the affected plant parts. In the case of corn, for example, the smut balls may replace kernels or cover the ears, causing a blackened, charred appearance.
Necrosis ustilaginea can cause significant damage to crops, leading to reduced yield and quality of produce. It can also result in aesthetic and economic losses for farmers. Control measures for this plant disease include the use of resistant cultivars, crop rotation, sanitation practices, and chemical treatments.
Overall, necrosis ustilaginea is a term used to describe a type of plant disease caused by smut fungi, that results in the death and decay of infected plant tissues.
Gangrene caused by the long-continued use of ergot.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "necrosis ustilaginea" consists of two components: "necrosis" and "ustilaginea".
1. "Necrosis": The word "necrosis" has its roots in Greek. It is derived from the ancient Greek word "nekrosis", meaning "the action of killing" or "death". In medical terminology, "necrosis" refers to the death of cells, tissues, or organs in a living organism.
2. "Ustilaginea": "Ustilaginea" is derived from the genus name "Ustilago", which belongs to a group of fungi commonly known as smut fungi. These fungi cause plant diseases characterized by black, powdery masses of spores on the affected plant parts. The term "ustilaginea" is used to specifically indicate something related to smut fungi or a condition caused by these fungi.